Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key

image

Play button

image

Play button

image

Progress

1/9

Click to flip

9 Cards in this Set

  • Front
  • Back
SPHENOPALATINE ARTERY
1. Sphenopalatine artery: arises from the maxillary artery within the
pterygopalatine fossa and enters the nasal cavity through the Spheno-
palatine foramen; divides into posterior lateral nasal arteries and poste-
rior septal arteries which supply the posterior parts of tlie lateral nasal
wall and nasal septum, respectively
POSTERIOR ETHMOIDAL ARTERY
2. Posterior ethmoidal artery: arises from the ophthalmic artery and
emerges through the posterosuperior part of the lateral nasal wall;
supplements the blood supply to the posterosuperior parts ot the lateral
nasal wall and nasal septum
ANTERIOR ETHMOIDAL ARTERY
3. Anterior ethmoidal artery: arises from the ophthalmic artery and enters
the nasal cavity through the cribriform plate; supplies tlie anterosuperior
parts ofthe lateral nasal wall and nasal septum
SUPERIOR LABIAL AND GREATER PALATINE ARTERIES
4. Superior labial and greater palatine arteries: arise troin tlie facial and
descending palatine arteries, respectively; enter the nasal cavity through
the nostril and incisive canal, respectively, and supply tlie anteroinferior
part ofthe nasal septum
LATERAL NASAL ARTERY

VEINS
5. Lateral nasal artery: arises from the facial artery; some ot its branches
supply the anteroinferior part ofthe lateral nasal wall

6. Veins: course with their corresponding arteries
PARANASAL SINUSES
III. Paranasal Sinuses
A. Mucosal-lined diverticula ofthe nasal cavity within tlie frontal, ethmoid,
sphenoid, and maxillary bones
PARANASAL SINUSES

FRONTAL SINUS
B. Frontal sinus: located superomedial to the orbital aperture within the squa-
mous and orbital parts ofthe frontal bone; its frontonasal iluct empties in-
feriorly into the ethmoidal infundibulum, which, in turn. drains into the nasal
cavity through the semilunar hiatus
PARANASAL SINUSES

ETHMOIDAL SINUSES
III. Paranasal Sinuses

C. Ethmoidal sinuses

1. Composed of about 10 thin-walled air cells located between the supe-
rior and middle nasal conchae and the orbital lamina of the ethmoid bone;
they are divided into three groups designated anterior, middle, and
posterior
PARANASAL SINUSES

ETHMOIDAL SINUSES
-anterior ethmoidal air cells
2. Anterior ethmoidal air cells drain into the ethmoidal infundibulum,
middle ethmoidal air cells lie within and drain onto the surface of the
ethmoidal bulla, and posterior ethmoidal air cells drain into the supe-
rior meatus